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How to use Runtime.getRuntime().exec() ?

Posted on 2001-06-21
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Last Modified: 2012-06-21
I have a big problem. I want to send a .zip to one of my server and what to unzip as soon as it lands up.

How can use my underlying operatring sytem which is Unix commands and NT server commands together.

I want to reach my HOME in unix /usr/app/dev so that my next command which connects to the NT server can read the login info from the .netsrc.

Thus can anyone tell me how to execute two commans simentaneulsy using the Runtime class. An example will be great help.

Thanx in advance.

dumdum
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Question by:dumdum420
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Expert Comment

by:rajendra_rathod
ID: 6217000
This is how u can run system commands.

public class dy {
     public static void main(String args[])     {
          Runtime r = Runtime.getRuntime();
          Process p = null;
          try{
          p = r.exec("javac -d d:\\Admin dt.java");
          }
          catch(Exception E){}
     }
     
     
}
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Expert Comment

by:Ovi
ID: 6217130
You have a chance only by executing the two commands on separate threads, but this implies that you don't need an specific order of execution.
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Author Comment

by:dumdum420
ID: 6218383
    remoteCommand[0] = "export HOME=/u01/app/kol";
     remoteCommand[1] = "rexec nadocument01.dumdum.com \"C:/pkware/pkzipc/PKZIPC -extract D:/inetpub/wwwroot/ko/" + koid + "/" + pfilename + " D:/inetpub/wwwroot/ko/" + koid +"\"";
     Runtime.getRuntime().exec(remoteCommand);
     System.out.println("remoteCommand " + remoteCommand[0] + remoteCommand[1]);

This is how I want to do the job. Firstly I go to my root dirctory of unix server and from where I do my remote command execution to my NT box which basically unzips my file in a particular directory.

Know if I dont have the argument number [0] then my servlet cannot find my root dirctory and thus is unable to get the login info from .netsrc.

This is a little complicated but help can do wonders..

Thanx in advance.

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Accepted Solution

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Ovi earned 50 total points
ID: 6223380
Try in this way :

remoteCommand0 = "export HOME=/u01/app/kol";
    remoteCommand1 = "rexec nadocument01.dumdum.com \"C:/pkware/pkzipc/PKZIPC -extract D:/inetpub/wwwroot/ko/"
+ koid + "/" + pfilename + " D:/inetpub/wwwroot/ko/" + koid +"\"";
    Runtime.getRuntime().exec(remoteCommand0 + ";" + remoteComand1);
    System.out.println("remoteCommand " + remoteCommand0 + ";"+ remoteCommand1);

This I believe the way for execution of more than two commands in a Linux enviroynment (same as Unix I believe, in this point).

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by:Ovi
ID: 6226682
Working ?
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